Automatic call-indicator for telephones.



No. 838,850. PATENTED DEC. 18, 1906. E. P. DENTON & A. W. NAZOR.

AUTOMATIC CALL INDICATOR FOR TBLEPHONBS.

APPLICATION FILED JANJS, 1906.

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UNITED STATES PATENT OFFICE.

EARL PAGE DENTON AND ARTHUR W. NAZOR, OF FRANKFORT, KENTUCKY.

AUTOMATIC CALL-INDICATOR FOR TELEPHONES.

Specification of Letters Patent.

Patented Dec. 18, 1906.

Application filed January 13 1906. Serial No. 295,968-

To all whom it puny concern.-

Be it known that we, EARL PAGE DENTON and ARTHUR W. NAZOR, citizens of the United States, residing at Frankfort, in the county of Franklin and State of Kentucky, have invented new and useful Improvements in Automatic Call-Indicators for Telephones, of which the following is a'specilication.

This invention relates to indicators designed especially for use in connection with telephone callbells, and has for its objects to produce a simple inexpensive device of this character which may be readily installed for use, one which will in practice disclose at a glance the fact that a call has been received, and one wherein the indicator will be wholly automatic in its operation.

With these and other objects in view the invention comprises the novel features of construction and combination of parts more fully hereinafter described.

In the accompanying drawings, Figure 1 is an elevation of a telephone-box equipped with an indicator embodying the invention and showing the parts in normal condition. Fig. 2 is a similar view showing the pointer in position for indicating that a call has been received. Fig. 3 is an elevation showing the means operating for returning the indicator to normal position. Fig. 4 is a detail sectional View taken on the line 4 4 of Fig. 1. Fig. 5 is a detail view of the indicator-hand or pointer.

Referring to the drawings, 1 designates a telephone call-box, to the front wall of which are attached a pair of relatively spaced bells 2,

having disposed therebetween a clapper 3, the stem 4 of which moves in an opening 5, formed in the outer wall of the box, and is operated by mechanism contained in the latter, there being connected with the latter a vertically-movable receiver arm or fork 6, designed for supporting the receiver 7. These parts, which are conventionally shown herein, may all be of the usual or any appropriate construction and material and are adapted in practice to perform their ordinary functions.

Pivoted at its upper end to the front wall of the box by means of a headed pivoting member 8 is a movable indicator hand or pointer 9, pressed into frictional engagement with the box-wall by means of a tensionspring 10, applied to the fastening member 8, said pointer being provided between its ends with an opening or perforation 11 and havin at a point suitably remote from its upper en a recess 12, constituting a seat for the stem 4.

Detachably secured to the arm 6, referably by means of a hook 13, is a ii exible traction element or cord 14, having its other end secured through the opening 11 in engagement with the pointer 9, said cord being arranged for travel between its ends upon a suitable guide 15, provided on the box 1.

In practice the hand 9 normally stands in the position indicated in Fig. 1, with the stem 4 of the clapper seated in the recess 12, under which conditions the cord 14 will when the receiver 7 is sustained from the arm 6 be slack. When the clapper 3 moves in sounding a call, the pointer will be moved to the position illustrated in Fig. 2 and held in such position, owing to pressure exerted by the retainingspring 10 the movement of the pointer being sufiicient to take up the slack in and hold the cord taut. The parts remain in this condition until the receiver 7 is removed from the fork 6, whereupon the latter in moving upward to the position illustrated in Fig. 3 exerts traction upon the cord 14 for automatically returning the pointer 9 to normal position. It is apparent that in the use of this device the indicator will disclose at a glance the fact that the telephonecall has been operated and permits the party receiving the call to readily determine the phone on which the call was received in cases where a number of phones are contained in the same room.

From the foregoing it is apparent that we produce a simple device admirably adapted for the attainment of the ends in View, it being understood that in attaining these ends minor changes in the details herein set forth may be resorted to without departing from the spirit of the invention.

Having thus described our invention ,what we claim is- 1. In a device of the class described and in combination with a telephone-bell and its clapper, a movable indicator member operable by the clapper for movement to indicating position, a movable receiver-arm, a flexible element connecting the arm and member for automatically returning the latter to normal position u on movement of the arm, and a guide on w ich the flexible element is arranged for travel.

2 In a, device of the class described and i in combination with a telephone-bell and its clapper, a pointer movable by the clapper to indicate a call, a movable receiver-arm, a 1

5 guide disposed at a point between the arm and pointer and a flexible element eonneet- Witnesses:

ing the arm and pointer and arranged for AMANDA HARROD,

travel between its ends on the guide. l MAGGIE HARROD.

In testimony whereof we affix our signatures 1n presence of two Witnesses.

EARL PAGE DENTON. ARTHUR W. NAZOR. 

